How to solve precision screws oil stains and common surface treatment process Precision screws often have oil stains in the production process, different cleaning agents can be classified according to their physical properties. Whey breakers are often used to remove oil slicks with anti-rust oil, and alkaline cleaners are used to remove corrosive dirt, especially for screws that have been heat treated, and the quenching oil must be thoroughly removed. So, how should non-standard screw manufacturers solve the oil stain problem of precision screws? Soluble emulsifier: Soluble emulsifier usually contains sand, organic solvent, emulsifier, cleaning agent, desulfurizer and a small amount of water. The role of water is to dissolve the emulsifier, the cleaning agent can dissolve the waste on the surface of the precision screw, and leave an anti-rust film on the surface. Emulsifiers and dishwashers are able to trap the vegetable oil particles tightly and dissolve them in a cleaning agent containing organic solvents and oils. Whey breaking lotion is a liquid pure oil product that, when diluted, becomes a milky milky liquid. Generation cleaning agent: Generation cleaning agent is different from traditional alkaline cleaning agent, its composition is also different. A cleaning agent is an organic chemical that contains amine chemicals and is primarily used to eliminate alkaline residues and prevent rust oils. During the single step cleaning process, a cleaning agent is generated to effectively remove residues.
In the surface treatment of stainless steel screws, under normal circumstances, stainless steel screws have a smooth surface without special treatment. However, depending on the requirements of the customer, surface treatment is sometimes required, which can meet the requirements of the engineering project, enhance the characteristics of the screws, and increase the aesthetics. So, do you know the common surface treatment method of stainless steel screws? Electroplating: The part to be treated is immersed in a solution containing a metal deposition compound, and the metal material is precipitated and deposited on the surface of the part through an electric current. Common electroplating methods include hot dip galvanizing, copper plating, nickel plating, chromium plating, copper-nickel plating and so on. Hot dip galvanizing: The carbon steel parts are immersed in a molten zinc plating tank at about 510 ° C, so that the iron-zinc alloy on the surface of the cast iron is gradually converted into passivation zinc, and hot dip aluminum plating is a similar process. Mechanical plating: The product surface is covered by impact coating particles, and the coating is sprayed onto the product surface. Usually, electroplating is used for screws, but hot dip galvanizing is chosen for hexagonal wood screws in power engineering, highways and other fields. Through the appropriate cleaning agent and surface treatment process, the oil stain problem of precision screws can be solved and the required surface treatment effect can be achieved.
